Super slow and cumbersome

We were looking for an easy solution to connect our WooCommerce webstore with a physical store. We sell books and currently have roughly 380k products online, which works perfectly with WooCommerce, ElasticPress, and some customizations, of course. Let’s face it: all plugins that aim to connect a physical store with WooCommerce are crap, and this one even costs around 120 euros and still doesn’t work as expected. It keeps freezing, not responding at all, or the EAN search simply returns no results, even though the products exist and are managed by ATUM (which is actually pretty good). The issue seems to be that under the hood, the products are mirrored through a super slow API, which bottlenecks everything very quickly. I’m really frustrated and will need to build my own solution over the next few weeks and months. On top of that, the support is nonexistent. Thank you very much for nothing. TL;DR: Can’t recommend.